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Acta Botanica Gallica
Botany Letters
Volume 157, 2010 - Issue 3
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Original Articles

Micropropagation of apple (Malus domestica L. cultivar Douce de Djerba) through in vitro culture of axillary buds

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Pages 513-524 | Received 02 Oct 2009, Accepted 04 Jan 2010, Published online: 26 Apr 2013
 

Abstract

A high frequency of sprouting (85.0%) and shoot differentiation is observed in the primary cultures of nodal explants of Malus domestica L. cultivar Douce de Djerba on MS medium supplemented with BAP (1.0 mg.L−1) plus IBA (0.1 mg.L−1). In vitro proliferated shoots are multiplied rapidly by culture of shoot tips on MS medium with BAP (1.0 and 2.0 mg.L−1) which produce the greatest multiple shoot formation. The BAP has a positive effect on the multiplication and growth, but a concentration that exceeds 4.0 mg.L−1 decreases the growth. A high frequency of rooting (66.7%) with development of healthy roots is observed from shoots cultured on half strength MS medium enriched with IBA (3.0 mg.L−1) and 2.0 g.L−1 of activated charcoal. Plants with well developed roots were transferred to soil with a survival frequency of 60%.

Résumé

Un fort pourcentage de débourrement (85.0%) est observé à partir d'une culture première des bourgeons axillaires de Malus domestica L. cultivar Douce de Djerba sur un milieu MS additionné de 1.0 mg.L−1 de BAP et de 0.1 mg.L−1d'AIB. L'étape de multiplication a été effectuée avec succès sur un milieu MS combinée de 1.0 et 2.0 mg.L−1 de BAP. En effet, la BAP a un effet positif sur la multiplication des pousses, mais une concentration supérieure à 4.0 mg.L−1 diminue la croissance. Le pourcentage d'enracinement le plus important (66.7%) a été observé sur un milieu MS dilué de moitié enrichi de 3.0 mg.L−1 d'AIB et 2.0 g.L−1 de charbon actif. 60% des plantules possédant un système racinaire bien développé ont été transférées avec succès en pleine terre.

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